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Finding the Fourth Proportional to 124,889.84, 187,316.76 and 40,657.76

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Solution

The fourth proportional to 124,889.84, 187,316.76 and 40,657.76 is: 60,980.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,889.84 : 187,316.76 = 40,657.76 : x
  2. Step 2: Convert to fraction form
    124,889.84/187,316.76 = 40,657.76/x
  3. Step 3: Cross multiply
    124,889.84x = 187,316.76 × 40,657.76
  4. Step 4: Simplify right side
    124,889.84x = 7,615,879,872.06
  5. Step 5: Solve for x
    x = 7,615,879,872.06/124,889.84
  6. Step 6: Final answer
    x = 60,980.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.